<template>
  <div class="app-container">
    <el-form :inline="true" @submit.native.prevent>
      <el-form-item label="菜单名称">
        <el-input
          v-model="queryParams.menuName"
          placeholder="请输入菜单名称"
          clearable
          size="small"
          @keyup.enter.native="handleQuery"
        />
      </el-form-item>
      <el-form-item label="状态">
        <el-select 
          v-model="queryParams.status" 
          placeholder="菜单状态" 
          clearable 
          size="small">
          <el-option
            v-for="dict in statusOptions"
            :key="dict.dictValue"
            :label="dict.dictLabel"
            :value="dict.dictValue"
          />
        </el-select>
      </el-form-item>
      <el-form-item>
        <el-button 
          type="primary" 
          icon="el-icon-search" 
          size="mini" 
          @click="handleQuery">搜索
        </el-button>
        <el-button 
          type="primary" 
          icon="el-icon-plus" 
          size="mini" 
          @click="handleAdd">新增
        </el-button>
      </el-form-item>
    </el-form>

    <el-table
      v-loading="loading"
      :data="menuList"
      row-key="menuId"
      :stripe=true
      :tree-props="{children: 'children', hasChildren: 'hasChildren'}"
      :header-cell-style="{'background': '#F6F8FB'}"
      :height="maxHeight"
      v-scrollbar="'.el-table__body-wrapper'"
    >
      <el-table-column 
        prop="menuName" 
        label="菜单名称" 
        :show-overflow-tooltip="true" 
        width="160">
      </el-table-column>
      <el-table-column prop="icon" label="图标" align="center" width="100">
        <template slot-scope="scope">
          <svg-icon :icon-class="scope.row.icon?scope.row.icon:'null'" />
        </template>
      </el-table-column>
      <el-table-column prop="orderNum" label="排序" width="60"></el-table-column>
      <el-table-column prop="perms" label="权限标识" :show-overflow-tooltip="true"></el-table-column>
      <el-table-column prop="component" label="组件路径" :show-overflow-tooltip="true"></el-table-column>
      <el-table-column prop="status" label="状态" :formatter="statusFormat" width="80"></el-table-column>
      <el-table-column label="创建时间" align="center" prop="createTime">
        <template slot-scope="scope">
          <span>{{ parseTime(scope.row.createTime) }}</span>
        </template>
      </el-table-column>
      <el-table-column width="180" label="操作" align="center" class-name="small-padding fixed-width">
        <template slot-scope="scope">
          <div class="operate-group">
            <span
              style="cursor:pointer;color: #409eff;font-size:12px;"
              type="text"
              class="el-icon-edit"
              :plain=false
              @click="handleUpdate(scope.row)"
            >修改</span>
            <span
              style="cursor:pointer;color: #409eff;font-size:12px;"
              type="text"
              class="el-icon-plus"
              :plain=false
              @click="handleAdd(scope.row)"
            >新增</span>
            <span
              style="cursor:pointer;color: #409eff;font-size:12px;"
              type="text"
              class="el-icon-delete"
              :plain=false
              @click="handleDelete(scope.row)"
            >删除</span>
          </div>
        </template>
      </el-table-column>
    </el-table>

    <!-- 添加或修改菜单对话框 -->
    <el-dialog 
      :title="title" 
      :visible.sync="open" 
      width="600px" 
      append-to-body 
      v-dialogDrag 
      :close-on-click-modal="false">
      <el-form 
        ref="form" 
        :model="form" 
        :rules="rules" 
        label-width="80px" 
        @submit.native.prevent>
        <el-row>
          <el-col :span="24">
            <el-form-item label="上级菜单">
              <treeselect
                v-model="form.parentId"
                :options="menuOptions"
                :normalizer="normalizer"
                :show-count="true"
                placeholder="选择上级菜单"
              />
            </el-form-item>
          </el-col>
          <el-col :span="24">
            <el-form-item label="菜单类型" prop="menuType">
              <el-radio-group v-model="form.menuType">
                <el-radio label="M">目录</el-radio>
                <el-radio label="C">菜单</el-radio>
                <el-radio label="F">按钮</el-radio>
              </el-radio-group>
            </el-form-item>
          </el-col>
          <el-col :span="24">
            <el-form-item v-if="form.menuType != 'F'" label="菜单图标">
              <el-popover
                placement="bottom-start"
                width="460"
                trigger="click"
                @show="$refs['iconSelect'].reset()"
              >
                <IconSelect ref="iconSelect" @selected="selected" />
                <el-input 
                  slot="reference" 
                  v-model="form.icon" 
                  placeholder="点击选择图标" readonly>
                  <svg-icon
                    v-if="form.icon"
                    slot="prefix"
                    :icon-class="form.icon?form.icon:'null'"
                    class="el-input__icon"
                    style="height: 32px;width: 16px;"
                  />
                  <i v-else slot="prefix" class="el-icon-search el-input__icon" />
                </el-input>
              </el-popover>
            </el-form-item>
          </el-col>
          <el-col :span="12">
            <el-form-item label="菜单名称" prop="menuName">
              <el-input v-model="form.menuName" placeholder="请输入菜单名称" />
            </el-form-item>
          </el-col>
          <el-col :span="12">
            <el-form-item label="显示排序" prop="orderNum">
              <el-input-number v-model="form.orderNum" controls-position="right" :min="0" />
            </el-form-item>
          </el-col>
          <el-col :span="12">
            <el-form-item v-if="form.menuType != 'F'" label="是否外链">
              <el-radio-group v-model="form.isFrame">
                <el-radio label="0">是</el-radio>
                <el-radio label="1">否</el-radio>
              </el-radio-group>
            </el-form-item>
          </el-col>
          <el-col :span="12">
            <el-form-item v-if="form.menuType != 'F'" label="路由地址" prop="path">
              <el-input v-model="form.path" placeholder="请输入路由地址" />
            </el-form-item>
          </el-col>
          <el-col :span="12" v-if="form.menuType == 'C'">
            <el-form-item label="组件路径" prop="component">
              <el-input v-model="form.component" placeholder="请输入组件路径" />
            </el-form-item>
          </el-col>
          <el-col :span="12">
            <el-form-item v-if="form.menuType != 'M'" label="权限标识">
              <el-input v-model="form.perms" placeholder="请权限标识" maxlength="50" />
            </el-form-item>
          </el-col>
          <el-col :span="12">
            <el-form-item v-if="form.menuType != 'F'" label="显示状态">
              <el-radio-group v-model="form.visible">
                <el-radio
                  v-for="dict in visibleOptions"
                  :key="dict.dictValue"
                  :label="dict.dictValue"
                >{{dict.dictLabel}}</el-radio>
              </el-radio-group>
            </el-form-item>
          </el-col>
          <el-col :span="12">
            <el-form-item v-if="form.menuType != 'F'" label="菜单状态">
              <el-radio-group v-model="form.status">
                <el-radio
                  v-for="dict in statusOptions"
                  :key="dict.dictValue"
                  :label="dict.dictValue"
                >{{dict.dictLabel}}</el-radio>
              </el-radio-group>
            </el-form-item>
          </el-col>
          <el-col :span="24">
            <el-form-item label="页面参数" prop="pageParams" v-if="form.menuType == 'C'">
              <el-input v-model="form.pageParams" type="textarea" placeholder="请输入页面参数" />
            </el-form-item>
          </el-col>
        </el-row>
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button type="primary" @click="submitForm">确 定</el-button>
        <el-button @click="cancel">取 消</el-button>
      </div>
    </el-dialog>
  </div>
</template>

<script>
  import { 
    listMenu, 
    getMenu, 
    delMenu, 
    addMenu, 
    updateMenu,
  } from "@/api/system/menu";
  import Treeselect from "@riophae/vue-treeselect";
  import "@riophae/vue-treeselect/dist/vue-treeselect.css";
  import IconSelect from "@/components/IconSelect";

  export default {
    inject: ['app'],
    name: "Menu",
    components: { Treeselect, IconSelect },
    data() {
      return {
        // 遮罩层
        loading: true,
        // 菜单表格树数据
        menuList: [],
        // 菜单树选项
        menuOptions: [],
        // 弹出层标题
        title: "",
        // 是否显示弹出层
        open: false,
        // 显示状态数据字典
        visibleOptions: [],
        // 菜单状态数据字典
        statusOptions: [],
        // 查询参数
        queryParams: {
          menuName: undefined,
          visible: undefined
        },
        // 表单参数
        form: {},
        // 表单校验
        rules: {
          menuName: [
            { required: true, message: "菜单名称不能为空", trigger: "blur" }
          ],
          orderNum: [
            { required: true, message: "菜单顺序不能为空", trigger: "blur" }
          ],
          path: [
            { required: true, message: "路由地址不能为空", trigger: "blur" }
          ]
        },
        commandOptions: [],
      };
    },
    created() {
      this.getList();
      this.getDicts("sys_show_hide").then(response => {
        this.visibleOptions = response.data;
      });
      this.getDicts("sys_normal_disable").then(response => {
        this.statusOptions = response.data;
      });
    },
    computed: {
      maxHeight() {
        if (this.app.screenHeight) {
          return this.app.screenHeight - 160
        }
      }
    },
    methods: {
      // 选择图标
      selected(name) {
        this.form.icon = name;
      },
      /** 查询菜单列表 */
      getList() {
        this.loading = true;
        listMenu(this.queryParams).then(response => {
          this.menuList = this.handleTree(response.data, "menuId",'parentId');
          this.loading = false;
        });
      },
      /** 转换菜单数据结构 */
      normalizer(node) {
        if (node.children && !node.children.length) {
          delete node.children;
        }
        return {
          id: node.menuId,
          label: node.menuName,
          children: node.children
        };
      },
      /** 查询菜单下拉树结构 */
      getTreeselect() {
        listMenu().then(response => {
          this.menuOptions = [];
          const menu = { menuId: 0, menuName: '主类目', children: [] };
          menu.children = this.handleTree(response.data, "menuId",'parentId');
          this.menuOptions.push(menu);
        });
      },
      // 显示状态字典翻译
      visibleFormat(row, column) {
        if (row.menuType == "F") {
          return "";
        }
        return this.selectDictLabel(this.visibleOptions, row.visible);
      },
      // 菜单状态字典翻译
      statusFormat(row, column) {
        if (row.menuType == "F") {
          return "";
        }
        return this.selectDictLabel(this.statusOptions, row.status);
      },
      // 取消按钮
      cancel() {
        this.open = false;
        this.reset();
      },
      // 表单重置
      reset() {
        this.form = {
          menuId: undefined,
          parentid: 0,
          menuName: undefined,
          icon: undefined,
          menuType: "M",
          orderNum: undefined,
          isFrame: "1",
          visible: "0",
          status: "0"
        };
        this.resetForm("form");
      },
      /** 搜索按钮操作 */
      handleQuery() {
        this.getList();
      },
      /** 新增按钮操作 */
      handleAdd(row) {
        this.reset();
        this.getTreeselect();
        if (row != null) {
          this.form.parentId = row.menuId;
        }
        this.open = true;
        this.title = "添加菜单";
      },
      /** 修改按钮操作 */
      handleUpdate(row) {
        this.reset();
        this.getTreeselect();
        getMenu(row.menuId).then(response => {
          this.form = response.data;
          this.open = true;
          this.title = "修改菜单";
        });
      },
      /** 提交按钮 */
      submitForm: function() {
        this.$refs["form"].validate(valid => {
          if (valid) {
            if (this.form.menuId != undefined) {
              updateMenu(this.form).then(response => {
                if (response.code === 200) {
                  this.msgSuccess("修改成功");
                  this.open = false;
                  this.getList();
                }
              });
            } else {
              addMenu(this.form).then(response => {
                if (response.code === 200) {
                  this.msgSuccess("新增成功");
                  this.open = false;
                  this.getList();
                }
              });
            }
          }
        });
      },
      /** 删除按钮操作 */
      handleDelete(row) {
        this.$confirm('是否确认删除名称为"' + row.menuName + '"的数据项?', "警告", {
          confirmButtonText: "确定",
          cancelButtonText: "取消",
          type: "warning"
        }).then(function() {
          return delMenu(row.menuId);
        }).then(() => {
          this.getList();
          this.msgSuccess("删除成功");
        }).catch(function() {});
      }
    }
  };
</script>
